43404 has 12 divisors (see below), whose sum is σ = 101304. Its totient is φ = 14464.

The previous prime is 43403. The next prime is 43411. The reversal of 43404 is 40434.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (43403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (8442).

2⁴³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

43404 is an abundant number, since it is smaller than the sum of its proper divisors (57900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50652).

43404 is a wasteful number, since it uses less digits than its factorization.

43404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 43404 is about 208.3362666460. The cubic root of 43404 is about 35.1433575937.

Adding to 43404 its reverse (40434), we get a palindrome (83838).

The spelling of 43404 in words is "forty-three thousand, four hundred four", and thus it is an iban number.